Home / 3,389.28-4,677.68-2,213.76

Finding the Fourth Proportional to 3,389.28, 4,677.68 and 2,213.76

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Solution

The fourth proportional to 3,389.28, 4,677.68 and 2,213.76 is: 3,055.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.28 : 4,677.68 = 2,213.76 : x
  2. Step 2: Convert to fraction form
    3,389.28/4,677.68 = 2,213.76/x
  3. Step 3: Cross multiply
    3,389.28x = 4,677.68 × 2,213.76
  4. Step 4: Simplify right side
    3,389.28x = 10,355,260.88
  5. Step 5: Solve for x
    x = 10,355,260.88/3,389.28
  6. Step 6: Final answer
    x = 3,055.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.